Waistline elastomer part production device and paper diaper body production device
By employing an elastic frame and a production device with graded stretch ratio control during the diaper manufacturing process, the problems of thin elastic breakage and infant pressure have been solved, resulting in a reduction in defect rate and cost, and improved diaper comfort.
Patent Information
- Application Number
- CN202423077587.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In existing technologies, thin elastic bands are prone to breakage during diaper production, resulting in high defect rates and increased manufacturing costs. Furthermore, the design of thick elastic bands causes infants and young children to experience greater pressure on their waist and abdomen, leading to poor comfort.
The production device, which uses an elastic band frame and graded stretch ratio, controls the conveying and stretch ratio of the thin elastic bands through a conveying drive roller assembly and a laying drive roller assembly, respectively. Combined with a tension sensor, the elastic band tension is adjusted to reduce the risk of breakage during the conveying process and to increase the stretch ratio during the laying process to meet the wearing requirements.
It effectively reduces the defect rate of broken thin elastic bands, saves material costs, and at the same time, through the graded stretch ratio design, it reduces the pressure on the waist and abdomen of infants and improves the comfort of diapers.
Smart Images
Figure CN223958942U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hygiene products, and more specifically, to a production apparatus for a waistband elastomer component and a production apparatus for a diaper pant body. Background Technology
[0002] Currently, commercially available baby diapers are mainly divided into waistband diapers and pant-style diapers. Existing technology for securing diapers primarily relies on several or dozens of thick elastic bands distributed around the waist and abdomen. The elastic bands typically range in density from 470 Dtex to 800 Dtex, with a stretch ratio generally between 2.8 and 3.5 times, and a spacing between the bands between 5mm and 20mm. While this conventional design with thick elastic bands offers advantages in terms of low technical barriers and low cost, the small number and thickness of the elastic bands cause the skin area compressed by the bands to dig into the epidermis when the baby wears the diaper. Since newborns' skin is not fully developed, the stratum corneum is easily abraded, leading to itching and potentially infection. On the other hand, the difference in waist circumference between infants and young children before and after drinking milk is significant. The increase in waist circumference after drinking milk, along with the expansion of the diaper waistband, causes a sudden increase in the tension of the elastic band around the waist and abdomen. This puts considerable pressure on the infants' waist and abdomen, which can easily lead to spitting up or difficulty breathing, making it difficult to achieve satisfactory comfort.
[0003] Studies have shown that replacing thick elastic bands with thin elastic bands, and simultaneously increasing the number of thin elastic bands, can significantly alleviate the feeling of tightness and reduce the pressure on the waist and abdomen of infants and young children, thus improving comfort, while still meeting the requirements for wearing tension. However, because thin elastic bands have a smaller diameter, they are more prone to breakage under the same stretching ratio, resulting in a high defect rate during the production process and significantly increasing manufacturing costs. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technology where thin elastic bands in the waistband are prone to breakage, resulting in a high defect rate and increased manufacturing costs. This invention provides a production device for waistband elastic components and a production device for diaper bodies, which can reduce the occurrence of thin elastic band breakage during the production process and reduce manufacturing costs.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A production apparatus for a waist circumference elastomer component is provided, including:
[0007] The rubber band frame is used for feeding rubber bands, and is provided with multiple rubber band material rollers for winding the rubber bands in sequence;
[0008] Several integrated guide rollers are used to tension and convey multiple rubber bands from different rubber band material rolls, and are arranged sequentially along the rubber band conveying path;
[0009] At least one conveying drive roller assembly is provided for driving the conveying of elastic bands and controlling the stretch ratio of the elastic bands during the conveying process, and is arranged sequentially along the conveying path of the elastic bands.
[0010] A drive roller assembly is provided at the rear end of the conveying drive roller assembly to control the stretch ratio during the laying of the elastic band.
[0011] The lower nonwoven fabric unwinding assembly is used for feeding the lower nonwoven fabric and is located at the rear end of the laying drive roller assembly.
[0012] The upper nonwoven fabric unwinding assembly is used for feeding the upper nonwoven fabric and is located at the rear end of the lower nonwoven fabric unwinding assembly.
[0013] The first glue gun is used to spray glue onto the elastic band, which facilitates the composite bonding of the elastic band with the lower and upper non-woven fabrics to form a waist elastic body component. It is located between the lower non-woven fabric unwinding assembly and the upper non-woven fabric unwinding assembly.
[0014] The traction mechanism is used to pull the elastic band, the lower non-woven fabric, and the upper non-woven fabric forward along the production and processing direction.
[0015] The stretch ratio of the rubber band along the conveyor drive roller assembly is less than the stretch ratio of the rubber band along the drive roller assembly where it is laid.
[0016] This invention utilizes an elastic band frame to support each elastic band roll. Each elastic band roll is wound with elastic bands, and multiple elastic bands are tensioned and conveyed in parallel through integrated guide rollers. The elastic bands are first conveyed through a conveying drive roller assembly at a low stretch ratio to avoid the thin elastic bands becoming too taut and frequently breaking during long-distance conveying. When the thin elastic bands are conveyed to the laying process, the conveying of the elastic bands is switched along the laying drive roller assembly to increase the stretch ratio of the elastic bands. The reason for increasing the stretch ratio of the elastic bands is twofold: firstly, it ensures that the waistband elastomer after the elastic bands are laid can meet the wearing tensile strength requirements and will not fall off due to insufficient tensile strength during use; secondly, it allows for the production of more waistband elastomers with the same length of elastic bands, i.e., a higher stretch ratio, which saves on the amount of elastic bands used and thus saves on material costs. Conventional elastic bands use the same stretch ratio during both the conveying and laying processes. While this doesn't cause breakage issues for thick elastic bands, thin elastic bands, with their smaller diameter, are highly susceptible to breakage if conveyed over long distances at a high stretch ratio. Conversely, using the same low stretch ratio throughout fails to meet the tensile strength requirements for wearing the bands and significantly increases material consumption and costs. Therefore, this invention creatively separates the conveying and laying processes of thin elastic bands by varying stretch ratios, thus meeting actual production requirements, reducing defect rates, and saving production costs. Specifically, depending on the conveying path distance, different conveying drive roller assemblies can be used to convey thin elastic bands at different positions using different stretch ratios. This can also be a gradual process, with the stretch ratio increasing progressively from the starting point to the laying position, which better maintains the toughness of the thin elastic bands and reduces the risk of breakage during conveying. Of course, when the conveying path is long, each conveying drive roller assembly can maintain the same stretch ratio for conveying the thin elastic bands.
[0017] Furthermore, it also includes several tension sensors for detecting the tension of the elastic band. Each conveying drive roller assembly and the laying drive roller assembly has a tension sensor at their rear end. The tension sensors can monitor the elastic band tension in real time and determine the current elastic band stretching ratio by measuring the tension value within different stretching ratio ranges. If the stretching ratio is too high, feedback is sent to the rear conveying drive roller assembly or laying drive roller assembly to adjust the tightness of the elastic band clamping slot. If the stretching ratio is too high, it is slightly loosened to increase the elastic band feeding and reduce the stretching ratio; if the stretching ratio is too low, the elastic band clamping slot will tighten, making the elastic band more taut, reducing the feeding and increasing the stretching ratio.
[0018] Furthermore, it also includes a slitting mechanism for slitting the waistband elastomer component into the waist and abdomen and waist and hip sections, located at the rear end of the upper nonwoven fabric unwinding assembly. The slitting mechanism is used to slit the waistband elastomer component into the waist and abdomen and waist and hip sections, facilitating the subsequent production of the diaper body.
[0019] Furthermore, it also includes a tension adjustment drive roller assembly, located at the rear end of the slitting mechanism, for adjusting the tightness of the waist and / or hips. The waist and hips can continue to be pulled forward in the original direction, while the waist and abdomen are appropriately relaxed by the tension adjustment drive roller assembly, so that the tightness of the waist and abdomen and hips of the final diaper product is different, that is, the tightness of the waistband is different at the front and back, which better conforms to the body curve of the infant's waist and abdomen, and prevents excessive stretching from causing abdominal breathing difficulties or spitting up after feeding.
[0020] Furthermore, the conveying drive roller assembly includes a conveying drive roller and a conveying drive motor, with the output shaft of the conveying drive motor connected to the conveying drive roller; the laying drive roller assembly includes a laying drive roller and a laying drive motor, with the output shaft of the laying drive motor connected to the laying drive roller; the tension adjusting drive roller assembly includes an adjusting drive roller and an adjusting motor, with the output shaft of the adjusting motor connected to the adjusting drive roller. By adjusting the rotational speed of the conveying drive motor, the rotational speed of the conveying drive roller driven by it can be adjusted, thereby adjusting the unwinding speed of the elastic band and changing the tensile ratio of the elastic band. Similarly, by adjusting the rotational speed of the laying drive motor, the rotational speed of the laying drive roller driven by it can be adjusted, thereby adjusting the unwinding speed of the elastic band and changing the tensile ratio of the elastic band.
[0021] Furthermore, the integrated guide wheel includes several guide wheels for conveying elastic bands, all of which are coaxially arranged. The guide wheels are used to guide and convey the elastic bands; the coaxial arrangement of the guide wheels allows multiple elastic bands to be arranged in parallel, avoiding tangling during the conveying process.
[0022] Furthermore, the elastic band frame includes multiple sets of parallel support frames, each support frame having multiple parallel receiving cavities. Each elastic band roll is installed in one of the receiving cavities and is rotatably connected to the support frame. Since a large number of thin elastic bands need to be laid, the parallel arrangement of the multiple receiving cavities and the parallel arrangement of the multiple sets of support frames facilitates the placement of the elastic band rolls, preventing the thin elastic bands from tangling during the conveying process.
[0023] This utility model also provides a diaper pant body production device, including the production device for the waist elastic body component as described above, for making the waist and abdomen and waist and hips;
[0024] The pant outer nonwoven fabric unwinding assembly is used for feeding the pant outer nonwoven fabric and is located at the rear end of the production device for the waistband elastomer component.
[0025] An ultrasonic bonding mechanism is used to ultrasonically bond the waist and abdomen and waist and hips to the outer non-woven fabric, with the waist and abdomen and waist and hips located at the two ends of the outer non-woven fabric of the pants, respectively.
[0026] The non-woven fabric unwinding assembly for the inner layer of the pants is used for feeding the non-woven fabric into the inner layer of the pants and is located at the rear end of the ultrasonic bonding mechanism.
[0027] The second glue gun is used to bond the outer non-woven fabric of the pants to the inner non-woven fabric of the pants by spraying glue. It is located between the ultrasonic bonding mechanism and the unwinding assembly of the inner non-woven fabric of the pants.
[0028] In this invention, the production device for the waistband elastomer component includes a slitting mechanism, which can be used to slit the waistband elastomer component into the waist and abdomen and waist and hips, and then bond the waist and abdomen and waist and hips to the outer non-woven fabric of the pants respectively. Then, the inner non-woven fabric of the pants is bonded to the outer non-woven fabric of the pants to obtain the diaper body, which serves as the basic component of the diaper. Combined with the absorbent core, a complete diaper product can be obtained.
[0029] Furthermore, the ultrasonic bonding mechanism includes an ultrasonic bonding bottom roller and an ultrasonic welding head. The ultrasonic welding head is located beside and at the rear end of the ultrasonic bonding bottom roller. The outer non-woven fabric of the trousers, the waist and abdomen, and the hips are all conveyed along the ultrasonic bonding bottom roller. The ultrasonic bonding bottom roller further conveys the material, facilitating contact between the ultrasonic welding head and the material to achieve ultrasonic welding.
[0030] This utility model also provides a production device for diaper pant body, including two sets of production devices for waist elastic body parts as described above, one set for making the waist and abdomen and the other set for making the waist and hips.
[0031] The pant outer non-woven fabric unwinding assembly is used for feeding the pant outer non-woven fabric. It is located at the rear end of the production device of the waist elastic component. The two sets of production devices of the waist elastic component respectively feed the waist and abdomen and waist and hip to the pant outer non-woven fabric.
[0032] An ultrasonic bonding mechanism is used to ultrasonically bond the waist and abdomen and waist and hips to the outer non-woven fabric, with the waist and abdomen and waist and hips located at the two ends of the outer non-woven fabric of the pants, respectively.
[0033] The non-woven fabric unwinding assembly for the inner layer of the pants is used for feeding the non-woven fabric into the inner layer of the pants and is located at the rear end of the ultrasonic bonding mechanism.
[0034] The second glue gun is used to bond the outer non-woven fabric of the pants to the inner non-woven fabric of the pants by spraying glue. It is located between the ultrasonic bonding mechanism and the unwinding assembly of the inner non-woven fabric of the pants.
[0035] This invention allows for the separate fabrication of the waist and abdomen and the waist and hips, eliminating the need to divide the waist and abdomen into sections after the elastic waistband component is manufactured. This makes the fabrication of the waist and abdomen more flexible, allowing for the selection of the elastic band thickness, number of elastic bands, and elastic band density as needed. The diameter of the elastic bands for the waist and abdomen can be made smaller, and / or the spacing between them can be increased, resulting in lower overall tension in the waist and abdomen. Conversely, the diameter of the elastic bands for the waist and hips can be made larger, and / or the spacing between them can be reduced to allow for more elastic bands, thereby increasing overall tension and making the tightness of the waist and abdomen less than that of the waist and hips.
[0036] Compared with the prior art, the beneficial effects of this utility model are:
[0037] This utility model discloses a production device for waistband elastomer components. It replaces the coarse denier elastic bands (as mentioned above) in conventional waistband elastomer components with fine denier elastic bands (as mentioned above). By reducing the spacing between the bands and increasing the number of bands, the overall tensile strength remains constant despite a decrease in the tensile strength of a single band. This significantly alleviates the feeling of tightness, reduces pressure on the waist and abdomen of infants and young children, and improves comfort. Since fine elastic bands are prone to breakage under high stretching ratios, a lower stretching ratio is used during the conveying process to reduce the defect rate. However, the stretching ratio is increased during the band laying process, which both meets the tensile strength requirements and reduces the consumption of fine elastic bands, saving material costs.
[0038] The production device for the diaper body of this utility model is based on the production device for the waist elastic component. The waist and abdomen and waist and hip parts of the waist elastic component are separated and glued to the outer non-woven fabric of the diaper body. At the same time, the inner non-woven fabric of the diaper body is also glued to the outer non-woven fabric of the diaper body to facilitate the subsequent installation of the absorbent core. The overall tensile force of the waist and abdomen is set to be less than that of the waist and hip parts, so that the pressure on the waist and abdomen of infants and young children is reduced after the diaper is worn, thus improving comfort. Attached Figure Description
[0039] Figure 1 This is a schematic diagram of a production device for a waistband elastomer component. The arrows in the diagram indicate the material conveying direction.
[0040] Figure 2 This is a schematic diagram of the integrated guide wheel structure;
[0041] Figure 3 This is a schematic diagram of a production device for diaper bodies, with arrows indicating the material conveying direction.
[0042] In the attached diagram: 100, elastic band frame; 101, elastic band material roll; 102, support frame; 103, receiving cavity; 110, integrated guide wheel; 111, guide wheel; 120, conveying drive roller assembly; 130, laying drive roller assembly; 140, lower layer nonwoven fabric unwinding assembly; 150, upper layer nonwoven fabric unwinding assembly; 160, first glue gun; 170, traction mechanism; 180, tension sensor; 190, slitting mechanism; 200, tension adjustment drive roller assembly; 210, outer layer nonwoven fabric unwinding assembly; 220, ultrasonic bonding mechanism; 221, ultrasonic bonding bottom roller; 222, ultrasonic welding head; 230, inner layer nonwoven fabric unwinding assembly; 240, second glue gun. Detailed Implementation
[0043] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0044] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0045] Example 1
[0046] like Figure 1 and Figure 2 As shown, this embodiment is an example of a production apparatus for a waistband elastomer component, including...
[0047] The rubber band frame 100 is used for feeding rubber bands, and multiple rubber band material rollers 101 for winding rubber bands are arranged in sequence.
[0048] Several integrated guide rollers 110 are used to tension and convey multiple rubber bands from different rubber band material rolls 101, and are arranged sequentially along the rubber band conveying path;
[0049] At least one conveying drive roller assembly 120 is used to drive the conveying of elastic bands and control the stretch ratio of the conveying process of elastic bands, and is arranged sequentially along the conveying path of elastic bands;
[0050] A drive roller assembly 130 is installed at the rear end of the conveyor drive roller assembly 120 to control the stretch ratio during the laying of the elastic band.
[0051] The lower nonwoven fabric unwinding assembly 140 is used for feeding the lower nonwoven fabric and is located at the rear end of the fabric driving roller assembly 130.
[0052] The upper nonwoven fabric unwinding assembly 150 is used for feeding the upper nonwoven fabric and is located at the rear end of the lower nonwoven fabric unwinding assembly 140.
[0053] The first glue gun 160 is used to spray glue onto the elastic band, which facilitates the composite bonding of the elastic band with the lower non-woven fabric and the upper non-woven fabric to form a waist elastic body component. It is located between the lower non-woven fabric unwinding assembly 140 and the upper non-woven fabric unwinding assembly 150.
[0054] The traction mechanism 170 is used to pull the elastic band, the lower non-woven fabric, and the upper non-woven fabric forward along the production and processing direction.
[0055] The stretch ratio of the rubber band along the conveying drive roller assembly 120 is less than the stretch ratio of the rubber band along the laying drive roller assembly 130.
[0056] This invention utilizes an elastic band frame 100 to support each elastic band material roll 101. Each elastic band material roll 101 is wound with elastic bands. Multiple elastic bands are tensioned and conveyed in parallel through integrated guide rollers 110. The elastic bands are first conveyed by the conveying drive roller assembly 120 at a low stretch ratio to avoid the thin elastic bands becoming too taut and frequently breaking during long-distance conveying. When the thin elastic bands are conveyed to the laying process, the conveying of the elastic bands is switched along the laying drive roller assembly 130 to increase the stretch ratio of the elastic bands. The reason for increasing the stretch ratio of the elastic bands is that, on the one hand, the waist elastic body after the elastic bands are laid can meet the wearing tensile strength requirements and will not fall off due to insufficient tensile strength during use; on the other hand, more waist elastic bodies can be manufactured with the same length of elastic bands, i.e., the stretch ratio is high, which can save the amount of elastic bands used, thus saving material costs. Conventional elastic bands use the same stretch ratio during both the conveying and laying processes. While this doesn't cause breakage issues for thick elastic bands, thin elastic bands, with their smaller diameter, are prone to breakage if conveyed over long distances at a high stretch ratio. Conversely, using the same low stretch ratio throughout fails to meet the tensile strength requirements for wearing the band and significantly increases material consumption and costs. Therefore, this invention creatively separates the conveying and laying processes of thin elastic bands by varying stretch ratios, thus meeting actual production requirements, reducing defect rates, and saving production costs. Specifically, depending on the conveying path distance, different conveying drive roller assemblies 120 can be used to convey thin elastic bands at different positions using different stretch ratios. This can also be a gradual process, with the stretch ratio increasing progressively from the starting point to the laying position, which better maintains the toughness of the thin elastic bands and reduces the risk of breakage during conveying. Of course, when the conveying path is long, each conveying drive roller assembly 120 can maintain the same stretch ratio for conveying the thin elastic bands.
[0057] Furthermore, it also includes several tension sensors 180 for detecting the tension of the elastic band. Each conveying drive roller assembly 120 and each laying drive roller assembly 130 has a tension sensor 180 at its rear end. The tension sensor 180 can monitor the tension of the elastic band in real time and determine the current elastic band stretch ratio by measuring the tension value within different stretch ratio ranges. If the stretch ratio is too high, it will provide feedback to the rear conveying drive roller assembly 120 or laying drive roller assembly 130 to adjust the tightness of the elastic band clamping groove. If the stretch ratio is too high, it will be slightly loosened to increase the feeding of the elastic band and reduce the stretch ratio; if the stretch ratio is too low, the clamping groove will tighten to make the elastic band more taut, reduce the feeding, and increase the stretch ratio.
[0058] Furthermore, it also includes a slitting mechanism 190, used to slit the waistband elastomer component into waist and abdomen and waist and hip sections, located at the rear end of the upper nonwoven fabric unwinding assembly 150. The slitting mechanism is used to slit the waistband elastomer component into waist and abdomen and waist and hip sections, which facilitates the subsequent production of the diaper body.
[0059] Furthermore, it also includes a tension adjustment drive roller assembly 200, used to adjust the tightness of the waist and / or hips, located at the rear end of the slitting mechanism 190; the tightness of the waist and abdomen is less than that of the hips. The hips can continue to be pulled forward in the original direction, while the waist and abdomen are appropriately relaxed by the tension adjustment drive roller assembly, so that the tightness of the waist and abdomen of the final diaper product is different from that of the hips, that is, the tightness of the waistband is different at the front and back, which better conforms to the body curve of the infant's waist and abdomen, and prevents excessive stretching from causing abdominal breathing difficulties or spitting up after feeding.
[0060] Specifically, the conveying drive roller assembly 120 includes a conveying drive roller and a conveying drive motor, with the output shaft of the conveying drive motor connected to the conveying drive roller; the laying drive roller assembly 130 includes a laying drive roller and a laying drive motor, with the output shaft of the laying drive motor connected to the laying drive roller; the tension adjusting drive roller assembly 200 includes an adjusting drive roller and an adjusting motor, with the output shaft of the adjusting motor connected to the adjusting drive roller. By adjusting the speed of the conveying drive motor, the speed of the conveying drive roller driven by it can be adjusted, thereby adjusting the unwinding speed of the elastic band and changing the stretch ratio of the elastic band. Similarly, by adjusting the speed of the laying drive motor, the speed of the laying drive roller driven by it can be adjusted, thereby adjusting the unwinding speed of the elastic band and changing the stretch ratio of the elastic band.
[0061] Furthermore, the integrated guide wheel 110 includes several guide wheels 111 for conveying the elastic bands, all of which are coaxially arranged. The guide wheels 111 guide and convey the elastic bands; the coaxial arrangement of the guide wheels 111 allows multiple elastic bands to be arranged in parallel, avoiding tangling during the conveying process. Since there are a large number of thin elastic bands, multiple integrated guide wheels 110 can be arranged in parallel to achieve a more rational arrangement of the elastic bands within a limited space, thus making the overall structure of the device more compact.
[0062] Furthermore, the elastic band frame includes multiple sets of parallel support frames 102, each support frame 102 having multiple parallel receiving cavities 103. Each elastic band material roll 101 is installed in one receiving cavity 103 and rotatably connected to the support frame 102. Since a large number of thin elastic bands need to be laid, the parallel arrangement of the multiple receiving cavities 103 and the parallel arrangement of the multiple sets of support frames 102 facilitates the placement of the elastic band material roll 101, preventing the thin elastic bands from tangling during the conveying process.
[0063] Preferably, the stretch ratio of the elastic band along the conveying drive roller assembly 120 is 2.0 to 2.5, and the stretch ratio of the elastic band along the laying drive roller assembly 130 is 2.5 to 3.0. Thin elastic bands cannot achieve the high elongation ratio of thick elastic bands, otherwise they would break easily. In addition to having a lower elongation ratio than thick elastic bands during transportation, thin elastic bands can also be laid with an even lower elongation ratio than thick elastic bands during installation. Thin elastic bands have a smaller diameter, so the number of thin elastic bands can be far greater than the number of thick elastic bands in the same area. Therefore, if thick elastic bands are laid with a lower elongation ratio, they may not be able to meet the tensile strength requirements when worn. However, the number of thin elastic bands is large. Just as a single chopstick has weak bending resistance, but multiple chopsticks bundled together can greatly increase their bending resistance, the principle is similar. Multiple thin elastic bands laid with a lower elongation ratio can achieve the same tensile strength as a small number of thick elastic bands laid with a high elongation ratio. However, the method of laying multiple thin elastic bands will not cause a sudden increase in the tensile strength of the waist and abdomen elastic bands due to the increase in waist circumference. Therefore, the comfort of waist elastic bodies made of thin elastic bands is greatly increased.
[0064] Example 2
[0065] like Figure 3 As shown, this embodiment is an embodiment 1 of a diaper pant body production device, including the production device for the waist elastic body component as described above, used to make the waist and hips;
[0066] The trouser outer nonwoven fabric unwinding assembly 210 is used for feeding the trouser outer nonwoven fabric and is located at the rear end of the production device for the waistband elastomer component.
[0067] The ultrasonic bonding mechanism 220 is used to ultrasonically bond the waist and abdomen and waist and hips to the outer non-woven fabric, respectively, wherein the waist and abdomen and waist and hips are located at the two ends of the outer non-woven fabric of the pants.
[0068] The non-woven fabric unwinding assembly 230 for the inner layer of the pants is used for feeding the non-woven fabric of the inner layer of the pants and is located at the rear end of the ultrasonic bonding mechanism 220.
[0069] The second glue gun 240 is used to bond the outer non-woven fabric of the pants to the inner non-woven fabric of the pants by spraying glue, and is located between the ultrasonic bonding mechanism 220 and the unwinding assembly of the inner non-woven fabric of the pants 230.
[0070] In this utility model, the production device for the waistband elastomer component includes a slitting mechanism 190, which can be used to slit the waistband elastomer component into the waist abdomen and waist hips, and then bond the waist abdomen and waist hips to the outer non-woven fabric of the pants respectively. Then, the inner non-woven fabric of the pants is bonded to the outer non-woven fabric of the pants to obtain the diaper pant body, which serves as the basic component of the diaper. Combined with the core of the absorbent part, a complete diaper product can be obtained.
[0071] Furthermore, the ultrasonic bonding mechanism 220 includes an ultrasonic bonding bottom roller 221 and an ultrasonic welding head 222. The ultrasonic welding head 222 is located beside and at the rear end of the ultrasonic bonding bottom roller 221. The outer non-woven fabric of the pants, the waist and abdomen, and the hips are all conveyed along the ultrasonic bonding bottom roller 221. The ultrasonic bonding bottom roller 221 further conveys the material, facilitating the contact of the ultrasonic welding head 222 to achieve ultrasonic welding.
[0072] Example 3
[0073] This embodiment is a second embodiment of a diaper pant body production device. The difference from embodiment 1 is that it includes two sets of production devices for waist elastic body components as described above, one set for making the waist and abdomen and the other set for making the waist and hips.
[0074] It also includes an unwinding assembly for the outer nonwoven fabric of the pants, used for feeding the outer nonwoven fabric of the pants, located at the rear end of the production device for the waist elastic component, and two sets of production devices for the waist elastic component respectively feed the waist and abdomen and waist and hips to the outer nonwoven fabric of the pants.
[0075] An ultrasonic bonding mechanism is used to ultrasonically bond the waist and abdomen and waist and hips to the outer non-woven fabric, with the waist and abdomen and waist and hips located at the two ends of the outer non-woven fabric of the pants, respectively.
[0076] The non-woven fabric unwinding assembly for the inner layer of the pants is used for feeding the non-woven fabric into the inner layer of the pants and is located at the rear end of the ultrasonic bonding mechanism.
[0077] The second glue gun is used to bond the outer non-woven fabric of the pants to the inner non-woven fabric of the pants by spraying glue. It is located between the ultrasonic bonding mechanism and the unwinding assembly of the inner non-woven fabric of the pants.
[0078] This invention manufactures the waist and abdomen and waist and hips separately, eliminating the need to slit the waist and abdomen and waist and hips after the waist elastic component is manufactured. Therefore, the production device for the waist elastic component in this embodiment does not include a slitting mechanism 190, which allows for more flexible manufacturing of the waist and abdomen and waist and hips. The thickness of the elastic band, the number of elastic bands, and the density of the elastic bands can be selected as needed. The diameter of the elastic bands for the waist and abdomen can be set smaller, and / or the spacing between the elastic bands can be increased, resulting in less overall tension in the waist and abdomen. For the waist and hips, the diameter of the elastic bands can be set larger, and / or the spacing between the elastic bands can be reduced to allow for more elastic bands, thereby increasing the overall tension and making the tightness of the waist and abdomen less than that of the waist and hips.
[0079] Conventional thick rubber bands are typically 470 denier to 800 denier, with 28 to 60 bands laid out, and a spacing of 5mm to 20mm. The thin rubber bands of this invention, however, are 70 to 280 denier, much smaller in diameter than the thick rubber bands, and are produced in quantities of 180 to 260, significantly more than the thick rubber bands. During transport, the thin rubber bands are conveyed at a lower stretch ratio to prevent breakage due to excessive tension. During installation, the stretch ratio is increased to meet the tensile requirements while reducing material consumption and saving on material costs.
[0080] Furthermore, adjacent elastic bands are laid out in parallel with a gap of 1.5mm to 3.125mm. The parallel arrangement of thin elastic bands prevents them from intersecting during transportation or installation; the smaller gap between adjacent thin elastic bands allows for a denser arrangement, which helps to improve the overall strength and tensile strength of the waistband's elastic components.
[0081] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.
[0082] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A production apparatus for a waistband elastomer component, characterized in that, The waistline elastic body component production device comprises an elastic rubber frame (100) for feeding the elastic rubber, a plurality of elastic rubber material roll rollers (101) for winding the elastic rubber are sequentially arranged on the elastic rubber frame (100); a plurality of integrated guide wheels (110) for tensioning and conveying a plurality of elastic rubbers from different elastic rubber material roll rollers (101) are sequentially arranged along an elastic rubber conveying path; at least one conveying drive roller assembly (120) for driving the elastic rubber conveying and controlling the stretching ratio of the elastic rubber conveying process is sequentially arranged along the elastic rubber conveying path; a laying drive roller assembly (130) for controlling the stretching ratio of the elastic rubber laying is arranged at the rear end of the conveying drive roller assembly (120); a lower non-woven fabric unwinding assembly (140) for feeding the lower non-woven fabric is arranged at the rear end of the laying drive roller assembly (130); an upper non-woven fabric unwinding assembly (150) for feeding the upper non-woven fabric is arranged at the rear end of the lower non-woven fabric unwinding assembly (140); a first glue gun (160) for spraying glue on the elastic rubber is arranged between the lower non-woven fabric unwinding assembly (140) and the upper non-woven fabric unwinding assembly (150), so as to facilitate the composite bonding of the elastic rubber, the lower non-woven fabric and the upper non-woven fabric to form a waistline elastic body component; a traction mechanism (170) for pulling the elastic rubber, the lower non-woven fabric and the upper non-woven fabric forward along the production and processing direction; the stretching ratio of the elastic rubber along the conveying drive roller assembly (120) is less than the stretching ratio of the elastic rubber along the laying drive roller assembly (130). The waistline elastic body component production device further comprises a plurality of tension sensors (180) for detecting the tension of the elastic rubber, and one tension sensor (180) is arranged at the rear end of each conveying drive roller assembly (120) and the rear end of the laying drive roller assembly (130). The waistline elastic body component production device further comprises a slitting mechanism (190) for slitting the waistline elastic body component into a waist-abdominal part and a waist-hip part, and the slitting mechanism (190) is arranged at the rear end of the upper non-woven fabric unwinding assembly (150). The waistline elastic body component production device further comprises a tension adjusting drive roller assembly (200) for adjusting the tightness of the waist-abdominal part and / or the waist-hip part, and the tension adjusting drive roller assembly (200) is arranged at the rear end of the slitting mechanism (190). The conveying drive roller assembly (120) comprises a conveying drive roller and a conveying drive motor, the output shaft of the conveying drive motor is connected with the conveying drive roller; the laying drive roller assembly (130) comprises a laying drive roller and a laying drive motor, the output shaft of the laying drive motor is connected with the laying drive roller; the tension adjusting drive roller assembly (200) comprises an adjusting drive roller and an adjusting motor, the output shaft of the adjusting motor is connected with the adjusting drive roller. The integrated guide wheel (110) comprises a plurality of guide wheels (111) for the elastic rubber conveying, and the guide wheels (111) are coaxially arranged. The elastic rubber frame (100) comprises a plurality of groups of support frames (102) arranged in parallel, a plurality of layers of accommodating cavities (103) are arranged in parallel in the support frames (102), and each elastic rubber material roll roller (101) is arranged in one accommodating cavity (103) and rotationally connected with the support frame (102). The waistline elastic body component production device comprises the waistline elastic body component of any one of claims 3 to 7, and is used for manufacturing a waist-abdominal part and a waist-hip part. 2. The apparatus for producing a waist elastic member according to claim 1, wherein 3. The apparatus for producing a waist elastic member according to claim 1, wherein 4. The apparatus for producing a waist elastic member according to claim 1, wherein 5. The apparatus for producing a waist elastic member according to claim 4, wherein 6. The apparatus for producing a waist elastic member according to claim 1, wherein 7. The apparatus for producing a waist elastic member according to claim 1, wherein 8. A production apparatus for a diaper body, characterized in that, The pant outer layer non-woven fabric unwinding assembly (210) is used for feeding the pant outer layer non-woven fabric and is arranged at the rear end of the waist elastic body component production device; The ultrasonic bonding mechanism (220) is used for ultrasonic composite bonding of the waist abdomen and the waist hip with the outer layer non-woven fabric, wherein the waist abdomen and the waist hip are respectively located at two ends of the pant outer layer non-woven fabric; The pant inner layer non-woven fabric unwinding assembly (230) is used for feeding the pant inner layer non-woven fabric and is arranged at the rear end of the ultrasonic bonding mechanism (220); The second glue gun (240) is used for bonding the pant outer layer non-woven fabric and the pant inner layer non-woven fabric by glue spraying and is arranged between the ultrasonic bonding mechanism (220) and the pant inner layer non-woven fabric unwinding assembly (230).
9. The apparatus for producing a diaper chassis according to claim 8, wherein The ultrasonic bonding mechanism (220) comprises an ultrasonic bonding bottom roller (221) and an ultrasonic welding head (222), the ultrasonic welding head (222) is arranged beside the ultrasonic bonding bottom roller (221) and at the rear end thereof, and the pant outer layer non-woven fabric, the waist abdomen and the waist hip are all conveyed along the ultrasonic bonding bottom roller (221).
10. A production apparatus for a diaper body, characterized in that, The waist elastic body component production device comprises two sets of the waist elastic body component production device as claimed in claim 1 or 2, wherein one set is used for manufacturing the waist abdomen and the other set is used for manufacturing the waist hip; The pant outer layer non-woven fabric unwinding assembly (210) is used for feeding the pant outer layer non-woven fabric and is arranged at the rear end of the waist elastic body component production device, and the two sets of waist elastic body component production devices convey the waist abdomen and the waist hip to the pant outer layer non-woven fabric respectively; The ultrasonic bonding mechanism (220) is used for ultrasonic composite bonding of the waist abdomen and the waist hip with the outer layer non-woven fabric, wherein the waist abdomen and the waist hip are respectively located at two ends of the pant outer layer non-woven fabric; The pant inner layer non-woven fabric unwinding assembly (230) is used for feeding the pant inner layer non-woven fabric and is arranged at the rear end of the ultrasonic bonding mechanism (220); The second glue gun (240) is used for bonding the pant outer layer non-woven fabric and the pant inner layer non-woven fabric by glue spraying and is arranged between the ultrasonic bonding mechanism (220) and the pant inner layer non-woven fabric unwinding assembly (230).